//
//  UIImageView+Extension.swift
//  MicroBlog
//
//  Created by  NorthCity on 15/11/8.
//  Copyright © 2015年  NorthCity. All rights reserved.
//

import UIKit
extension UIImageView{
/// 便利构造函数
//    便利构造函数只能返回 nil
    convenience init(imageName:String){
        self.init(image: UIImage(named: imageName))
    }
}